Coffee or nut roaster



(No Model.)

B. P. SHIELDS.

COFFEE. 0R NUT MASTER.

No. 324,599. Patented Aug. 18, 1885.

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. NIT-ED STATES BENJAMIN F. SHIELDS, OF OSKALOOSA, IOVA.

COFFEE OR NUT ROASTER.

SPECIFICATION forming part of Letters Patent No. 324,599, dated August18, 1885. Application filed August B, 1884i. (No model.)

T0 all whom it. may concern:

Be it known that I, BENJAMIN F. SHIELDs,

4a citizen of the United States, residing at of the cylinder orreceiving chamber,in which u the steam and water after passing throughthe heating-pipe are separated, and conducted, respectively, to theengine and water-tank, also showing the several connections to thechainy ber in elevation; and Fig. 3, a detail view in section of thereceivingchamber and watertank, showing the means of communication witheach other, also the pump and water-pipe communicating with each otherand the tank.

The present invention has relation to that class of coffee and nutroasters in which is cmploycd a suitable engine for rotating theroasting-cylinder by means of steam generated in a boiler and .suppliedto the engine by means of a pipe communicating therewith and with thecylinder of the engine.

Heretofore the means usually employed were the flames from a gasolineburner or burners extending froma pipe or pipes leading to a suitablereservoir containing the supv ply of gasoline, and as the steam wasgenerated in a boiler it was necessary to provide two sets of burners,one arranged under the boiler to heat it and the other under theroasting-cylinder, thereby consuming an unnecessary amount of fuel toattain the end desired.

Ihe object of the present invention is to dispense with the use of theboiler heretofore employed and generate the steam directly in the pipesas the water passes through them,and to attain this object I arrange thepipe or pipes directly under the roastiug-cylinder,and cause acontinuous circulation of water throu gh them, and arrange the burnersunder said pipes, so that the heat used to generate the steam may 5o beutilized to do the roasting,

In the accompanying drawings, A represents the casin g, of any suitableform and dimensions, provided at its top with the usual nut-pan, a, intowhich the nuts are emptied from the roasting-cylinder to keep them warm.The casing A contains what I term a fire-box, H, and in this fre-boX islocated the roasting-cylinder B,of the usual construction,revolved bymeans of pulleys and belt or other suitable means connecting with anengine, I, of any wellknown construction commonly used with this classof devices.

Below the cylinder B,and directly under it, is the coil-pipe C, saidpipe, although being preferably coiled to increase its heating-surface,as shown, may be composed of' aseries of horizontal and parallel pipes;but these would be less effective for the purpose. One end of the coil Cconnects with a pipe, b, which extends up a short distance, and thenpasses down through the top into a receiving-cham` ber, D, to dischargethe surplus steam and water therein. This receiving-chamber I shall terma separaton as the steam and water as it is discharged from the pipe b,after passing through the coil, is separated, the water being conductedto the supply-tank hereinafter described and the steam to the cylinderof the engine. The opposite end of the coil C connects with a pipe, e,which extends through the coil down to a pump-cylinder, k, in which arelocated a suitable valve, i, and piston k, said pump communicating witha tank, K, by means of a short pipe, l.

When the pump is in operation, water will be taken from the tank K,forced up pipe e, through the coil O, and thence discharged intotheseparator D through Vpipe b. Thcpiston-rod m of the pump beingconnected to the engine I by crank-pin or any ofthe well-known means,the piston k is given a continuous reciprocating motion, thereby causinga continuous circulation of water through. the coil in which steam isgenerated by means of the flames from the gasoline-burners @,placcdunder the coil, or any other heating medium may be used. As

the water and surplus steam, are discharged into the separator, thewater will fall to the bottom and steam will rise and pass to the enginethrough the pipe f, with which it com- IOO . power to run the engine.

municates, thus being utilized as a motive The surplus water in theseparator D is conveyed back tothe tank K through a pipe, g, said pipebeingprovided with a cock, and acts as ablow-ofl' pipe to clean theseparator of all sediment.

The separator D is provided with a suitable gage, E, safety-valve d, andpressureindicator F.

It will be noticed that the boilers usually employed in this class ofdevices are entirely dispensed with, the burners used performing thedouble ofce of generating the steam in the coil ofpipe as a motive powerfor the en gine, and at the same time heating the cylinder that containsthe coffee or nuts, the heat also radiating from the coil assisting theroasting. The flame from the burners first strikes the coil,and,inconnection with the heat therefrom, passes up and strikes theroastingeylindcr, while the waste heat will strike the bottom of thenut-pan and keep the nuts warm.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is*

l. In a roasting apparatus,the combination of a revolving cylinder, amotor, a steam-coil generator for the motor located beneath the roastingcylinder, means for heating said cylinder and steam-coil, and a pumpoperated from said motor, and located between the steamcoil and itssupply, to force a continuous current of water through thecoil,substantially as described, and for the purposes specified.

2. In a roasting apparatus,the combination of a revolving cylinder, amotor, a steam generator, a supply-tank and separator connected withthegenerator, theseparator communicating with said tank and 1notor,and apump operated from the motor, and located between the tank andgenerator, the parts being constructed, arranged, and operatingsubstantially as shown,and for the purposes described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

BENJAMIN F. SHIELDS.

Witnesses:

N ATHAN W. HUssEY, Tirosn B. GARRnTsoN.

